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Finding the Third Proportional to 18,388.97 and 39,693.66

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Solution

The third proportional to 18,388.97 and 39,693.66 is: 85,681.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.97 : 39,693.66 = 39,693.66 : x
  2. Step 2: Convert to fraction form
    18,388.97/39,693.66 = 39,693.66/x
  3. Step 3: Cross multiply
    18,388.97x = 39,693.66 × 39,693.66
  4. Step 4: Simplify right side
    18,388.97x = 1,575,586,346.49
  5. Step 5: Solve for x
    x = 1,575,586,346.49/18,388.97
  6. Step 6: Final answer
    x = 85,681.06

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.